Paper receptacle.



IGr. W. MAXWELL.

PAPER REGEPTAGLB.

I APPLIUATION FILED SEPT. 23, 1907.

1 l l I I f UNIT T OFFIQE. i

GEORGE W. MAXWELL, OF SAN FRANCISCO, CALIFORNIA.

PAPER RECEPTACLE.

, Application filed September 23, 1907.

' cisco and State of California, have invented certain new and usefulImprovements in Paper Receptacles, of which the following is aspecification.

My invention relates'to receptacles made of paper or similar fibrousflexible material, and which are more especially intended for containingliquid or semi-liquid contents, although adapted to the reception of dryproducts as well.

In its especial relation to some kinds of solid and liquid contents, theobject of the invention is to provide a receptacle'of such character andconstruction that any seepage of the contents through the walls 4can beprevented, as well as exterior discoloration, de-

facement of labels when used, and the giving off of odors from odorouscontents.

Another object is the providing of a simple cheap and thoroughly liquidtight containing vessel. l

A receptacle constructed according to my invention, has an open endedtubular body formed by wrapping or winding a blank of proper length witha plurality of turns upon a mandrel, the walls of such'body thus havinga plurality of thicknesses. The body is also formed with specialreference to the insertion and liquid-tight securing of bottom and4cover disks, and the whole construction results in a simple, cheap,air-tight and liquid tight paper receptacle.

An embodiment of my invention is hereinafter described, and is shown inthe accompanying drawing, in which: Figure l is an elevation, brokentoshow a vertical section of one end. Fig. 2 is an end view of thereceptacle'body showing its appearance before it is beaded and crimped,and is also equivalent to a cross section of the body at any planebetween its ends. Fig. 3 is a cross section of one of the end disks.

The body l of the receptacle is formed from a blank of paper or likefibrous liexible material of suitable thickness, and which is of suchlength that when wrapped around a forming mandrel at least two completeturns will be required to produce the open-ended tubular structureshown. ,The body, thus formed, has therefore at least two completeclosely fitting thicknesses of material, with its free ends overlappingbut separated by Specification of Letters Patent.

Patented Nov. 3, 1908.

Serial No. 394,134.

material intermediate between them, as

shown at 2, 3, and 4 in Fig. 2.

In order to make a smooth interior jointv and uniform innercircumference, the inner free end of the blank is beveled or other- Wisereduced to an edge shown at 5; and although it' is not considerednecessary in practice, the outer end can also be reduced in like mannerso as to make a smooth eX- terior joint. The parts 2 and 3, and theparts 4 and 3 are secured together by adhesive material between them,and the receptacle is rendered waterproof by a coating of paraliinapplied to the inside after the body has been formed.

At each end the -body of the receptacle is flared outwardly as shown at6, and is then turned over or crimped upon the end disk 7." A crosssection of one of these disks is shown in Fig. 3. It has a beveled edgewhich when it is inserted bears with a wedging action against the innerflared surface of the receptacle body, for its own full thickness; andwhen held in place by the crimping of the receptacle body provides apractically non-leakable joint. I can however, in order to still furtherguard against the possibility of leakage, coat the beveled edges of thedisks with parain or with some proper adhesive composition. To guardagainst accidental displacement of the disks by rough usage, as inshipping for example, and to form a more durable air-tight receptacle, Iprefer to place a thick narrow layer of 'waterproof adhesive materialover the seam between the top of the disks and the crimped portion at 6,thus cementing the crimped portion of the disks.

A receptacle constructed according to my invention possesses certainspecial advantages in addition to the ordinary advantages pertaining tothe stiff, practically unbreakable and liquid-tight structure described.`When the receptacle contains either solid or liquid contents to which aparain coating is not impermeable, such as lard and coal-oil, anordinary single-walled paper vessel permits a seepage by capillaryaction which is evidenced by discoloration of the outside of the vesseland of any labels which it may bear, as well as by the lodor of suchcontents. This tends to impair the salability of packages of thatcharacter, and toy prevent the use of paper receptacles for suchsubstances. it is possible to coat so much of the blank With a vessel ofdouble thickness `as forms the outer surface of the rst lap, and Whichis indicated bythe line beginning at and terminating at y in Fig. 2 withsome substance preferably Waterproof, and impenetrable by the particularcontents, such substance being entirely concealed .between adjacentsurfaces of the double thiclc ness. This coating therefore never comesinto -contact with the actual contents of the receptacle, and at thesame time effectively 'prevents such contents from seeping through anddiscoloring the outside. As the contents are protected from actualContact with such coating by one Whole thickness of the body, and asthere is another between it and the exterior, it is possible to use forsuch purpose substances Which might ordinarily be consideredobjectionable by reason of their odor or from other causes.

What I claim is:

In a receptacle of ibrous material, a tubular body made inyone pieceWith a double Wall, and having its ends flared and crimped,

GEORGE W. MAXWELL.

l/Vitnesses:

L. G. MAXWELL, F. M. BARTEL.

